Infrared polarized machine vision light source
By using a wire grid polarizer made of metal and an annular fixing component, the problem of deformation of polymer polarizers due to high-brightness light was solved, and a stable detection effect of infrared polarization machine vision light source was achieved.
Patent Information
- Application Number
- CN202521884659.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-02
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-02
AI Technical Summary
In traditional infrared light sources, polymer polarizers are prone to deformation due to high-brightness light exposure during detection, leading to unstable detection results.
The first and second wire grid polarizers, made of metallic materials, are combined with an annular fixing component to enhance heat dissipation, reduce polarizer deformation, and ensure detection stability.
The stability of the detection results is improved. By utilizing the heat dissipation effect of the metal material and the fixing structure, the deformation of the polarizer is reduced, ensuring the continuity and accuracy of the detection.
Smart Images
Figure CN224681676U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of detection light source technology, and in particular to an infrared polarization machine vision light source. Background Technology
[0002] With the rapid development of the machine vision inspection industry, there are more and more scenarios that require the use of infrared light sources to detect penetration of the tested object, and the inspection requirements are also getting higher and higher. For example, when inspecting internal structural defects of OLED screens or LCD screens, while using infrared light for penetration detection, polarizers are usually needed to eliminate stray light interference. However, because the amount of infrared light attenuates after entering the product structure, in order to ensure the inspection effect, a high-power infrared light source is usually selected, and the brightness of the emitted light is increased by increasing the power of the circuit board current. However, because traditional polymer polarizers are exposed to high-brightness light emitted by infrared light sources for a long time, they are prone to deformation and warping due to temperature rise, and may even decay, affecting the stability of the inspection effect. Utility Model Content
[0003] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide an infrared polarized machine vision light source with good heat resistance, which can ensure the stability of the detection effect.
[0004] To achieve the above objectives, this utility model provides an infrared polarized machine vision light source, comprising a mounting base, a light-emitting element, a first linear grid polarizer, a first fixing member, a second linear grid polarizer, and a second fixing member; the mounting base is annular; an opening is defined in the middle of the mounting base, and a limiting boss is provided on the inner wall of the opening, the limiting boss having an upwardly facing mounting surface; the mounting base is provided with a receiving cavity and light-emitting ports; multiple light-emitting ports are provided, all communicating with the receiving cavity; the multiple light-emitting ports are all located at the bottom end of the mounting base and arranged in a ring at intervals; multiple light-emitting elements are provided, all located in the receiving cavity. Inside; multiple light-emitting elements are respectively disposed above multiple light-emitting ports; a first linear grid polarizer, made of metal material; the first linear grid polarizer is disposed at the opening and abuts against the mounting surface; a first fixing member, which is annular; the first fixing member is connected to the mounting base and abuts against the outer peripheral side and top edge of the first linear grid polarizer; a second linear grid polarizer, which is annular and made of metal material; the top end of the second linear grid polarizer abuts against the bottom end of the mounting base and covers the multiple light-emitting ports; a second fixing member, which is annular; the second fixing member is connected to the mounting base and abuts against the outer peripheral side and bottom edge of the second linear grid polarizer.
[0005] Furthermore, the first fixing member includes a first fixing ring; a first limiting groove is provided on the lower inner side of the first fixing ring; the outer side of the first fixing ring abuts against the inner wall of the opening, and the groove wall of the first limiting groove abuts against the outer peripheral side and top edge of the first wire grid polarizer.
[0006] Furthermore, the first fixing member also includes a first fixing ring; the first fixing ring abuts against the inner wall of the opening and abuts against the top of the first fixing ring.
[0007] Furthermore, the bottom outer edge of the mounting base is provided with a first annular protrusion; the second fixing member includes a second fixing ring; the upper inner side of the second fixing ring is provided with a second limiting groove; the outer peripheral side of the second fixing ring abuts against the inner side wall of the first annular protrusion, and the groove wall of the second limiting groove abuts against the outer peripheral side and bottom edge of the second wire grid polarizer.
[0008] Furthermore, the second fixing member also includes a second fixing ring; the second fixing ring abuts against the inner sidewall of the first annular protrusion and abuts against the bottom end of the second fixing ring.
[0009] Furthermore, a second annular protrusion is provided on the inner edge of the bottom end of the mounting base; the second annular protrusion is disposed opposite to the first annular protrusion and abuts against the inner sidewall of the second wire grid polarizer.
[0010] Furthermore, the light-emitting element includes a TRI total reflection lens and a light-emitting LED; the TRI total reflection lens is disposed over the light outlet, and the light-emitting LED is disposed inside the TRI total reflection lens.
[0011] Furthermore, the mounting base includes a base body and a cover plate; the bottom end of the base body is provided with a receiving groove extending along an annular path; the cover plate is annular, the top end of the cover plate abuts against the bottom end of the base body, and covers the opening of the receiving groove to define the receiving cavity; a plurality of light outlets are provided on the cover plate.
[0012] Furthermore, the top of the base is provided with a heat dissipation groove, which extends along a circular path, and there are multiple heat dissipation grooves arranged at intervals.
[0013] Furthermore, a third annular protrusion is provided on the outer edge of the top of the cover plate, and an annular mounting groove is provided on the lower outer side of the seat body, with the third annular protrusion disposed in the annular mounting groove.
[0014] Compared with the prior art, the present invention has the following advantages: In the embodiment of the present invention, the light emitted by the light-emitting element located in the receiving cavity can pass through the light outlet and be emitted outward through the second linear grid polarizer; multiple light-emitting elements will generate a large amount of heat during operation and transfer it to the mounting base. Compared with traditional polymer polarizers, the first and second linear grid polarizers are both made of metal materials, which makes the heat dissipation and heat resistance of the first and second linear grid polarizers better, and can ensure the stability of the detection effect. Furthermore, the first fixing member abuts against the outer peripheral side and top edge of the first linear grid polarizer to press and fix the first linear grid polarizer, thereby reducing the degree of structural deformation of the first linear grid polarizer. The second fixing member abuts against the outer peripheral side and bottom edge of the second linear grid polarizer to press and fix the second linear grid polarizer, thereby reducing the degree of structural deformation of the second linear grid polarizer, which can further ensure the stability of the detection effect. Attached Figure Description
[0015] To more clearly illustrate the technology in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of the infrared polarization machine vision light source of this utility model.
[0017] Figure 2 for Figure 1 A schematic diagram of the infrared polarization machine vision light source of this utility model from another perspective;
[0018] Figure 3 This is a cross-sectional view of the infrared polarized machine vision light source of this utility model.
[0019] Figure 4 This is a cross-sectional view of the mounting base for the infrared polarized machine vision light source of this utility model.
[0020] Figure 5 This is a schematic diagram of the structure of the first fixing component of the infrared polarization machine vision light source of this utility model;
[0021] Figure 6 This is a schematic diagram of the structure of the second fixing component of the infrared polarization machine vision light source of this utility model.
[0022] Reference numerals: Mounting base 100; Opening 101; Limiting boss 102; Receiving cavity 103; Light outlet 104; First annular protrusion 105; Second annular protrusion 106; Third annular protrusion 107; Base 110; Receiving groove 111; Heat dissipation groove 112; Cover plate 120; Light-emitting element 200; First linear grid polarizer 300; First fixing member 400; First fixing ring 410; First limiting groove 411; First fixing ring 420; Second linear grid polarizer 500; Second fixing member 600; Second fixing ring 610; Second limiting groove 611; Second fixing ring 620. Detailed Implementation
[0023] The technology of this embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiment is one embodiment of the present invention, and not all embodiments thereof. Based on this embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0024] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0025] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second", such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.
[0026] Please see Figures 1 to 6This utility model provides an infrared polarized machine vision light source, which includes a mounting base 100, a light-emitting element 200, a first linear grid polarizer 300, a first fixing member 400, a second linear grid polarizer 500, and a second fixing member 600. The mounting base 100 is annular. An opening 101 is defined in the middle of the mounting base 100, and a limiting boss 102 is provided on the inner wall of the opening 101. The limiting boss 102 has an upwardly facing mounting surface. The mounting base 100 is provided with a receiving cavity 103 and light-emitting ports 104. Multiple light-emitting ports 104 are provided, and all of them are connected to the receiving cavity 103. The multiple light-emitting ports 104 are all located at the bottom end of the mounting base 100 and are arranged in a ring at intervals. Multiple light-emitting elements 200 are provided. All are housed within the receiving cavity 103; multiple light-emitting elements 200 are respectively disposed above multiple light-emitting ports 104; the first linear grid polarizer 300 is made of metal; the first linear grid polarizer 300 is disposed at the opening 101 and abuts against the mounting surface; the first fixing member 400 is annular; the first fixing member 400 is connected to the mounting base 100 and abuts against the outer peripheral side and top edge of the first linear grid polarizer 300; the second linear grid polarizer 500 is annular and made of metal; the top end of the second linear grid polarizer 500 abuts against the bottom end of the mounting base 100 and covers the multiple light-emitting ports 104; the second fixing member 600 is annular; the second fixing member 600 is connected to the mounting base 100 and abuts against the outer peripheral side and bottom edge of the second linear grid polarizer 500.
[0027] In this embodiment of the invention, the light emitted by the light-emitting element 200 located in the receiving cavity 103 can pass through the light outlet 104 and be emitted outward through the second linear grid polarizer 500. During operation, the multiple light-emitting elements 200 generate a large amount of heat, which is transferred to the mounting base 100. Compared to traditional polymer polarizers, both the first linear grid polarizer 300 and the second linear grid polarizer 500 are made of metal, resulting in better heat dissipation and heat resistance. To ensure the stability of the detection effect, the first fixing member 400 abuts against the outer peripheral side and top edge of the first linear grid polarizer 300 to press and fix the first linear grid polarizer 300, thereby reducing the degree of structural deformation of the first linear grid polarizer 300. The second fixing member 600 abuts against the outer peripheral side and bottom edge of the second linear grid polarizer 500 to press and fix the second linear grid polarizer 500, thereby reducing the degree of structural deformation of the second linear grid polarizer 500, which can further ensure the stability of the detection effect.
[0028] Specifically, the light-emitting element 200 is a high-brightness red light lamp bead structure; it also includes a circuit board, which is located inside the receiving cavity 103. Multiple light-emitting elements 200 are all arranged at the bottom of the circuit board. The circuit board can control the start and stop of multiple light-emitting elements 200 and can adjust the working power of the light-emitting elements 200.
[0029] Specifically, the mounting base 100 extends around the vertical axis, and the orientation of the limiting boss 102 is the same as the axial direction of the vertical axis.
[0030] Specifically, both the first line grid polarizer 300 and the second line grid polarizer 500 are self-supporting all-metal line grid polarizers.
[0031] Reference Figures 2 to 4 In some embodiments of this utility model, the first fixing member 400 includes a first fixing ring 410; a first limiting groove 411 is provided on the lower inner side of the first fixing ring 410; the outer side of the first fixing ring 410 abuts against the inner wall of the opening 101, and the groove wall of the first limiting groove 411 abuts against the outer peripheral side and top edge of the first wire grid polarizer 300.
[0032] The limiting boss 102 has an upwardly facing mounting surface. When the first linear grid polarizer 300 is mounted on the limiting boss 102, the bottom end of the first linear grid polarizer 300 abuts against the mounting surface of the limiting boss 102. The first fixing ring 410 is placed at the opening 101, and the outer side of the first fixing ring 410 abuts against the inner wall of the opening 101. The position of the first fixing ring 410 and the first linear grid polarizer 300 can be defined by the friction between the first fixing ring 410 and the inner wall of the opening 101.
[0033] Reference Figures 2 to 4 In some embodiments of this utility model, the first fixing member 400 further includes a first fixing ring 420; the first fixing ring 420 abuts against the inner wall of the opening 101 and abuts against the top end of the first fixing ring 410.
[0034] After the first fixing ring 410 is pressed against the first linear grid polarizer 300, the first fixing ring 420 can be placed on the first fixing ring 410. The position of the first fixing ring 420 can be defined by the friction between the first fixing ring 420 and the inner wall of the opening 101, thereby fixing the positions of the first fixing ring 410 and the first linear grid polarizer 300.
[0035] Reference Figures 2 to 4In some embodiments of this utility model, a first annular protrusion 105 is provided on the outer edge of the bottom end of the mounting base 100; the second fixing member 600 includes a second fixing ring 610; a second limiting groove 611 is provided on the upper inner side of the second fixing ring 610; the outer peripheral side of the second fixing ring 610 abuts against the inner side wall of the first annular protrusion 105, and the groove wall of the second limiting groove 611 abuts against the outer peripheral side and the bottom edge of the second wire grid polarizer 500.
[0036] The second linear grid polarizer 500 is mounted on the limiting boss 102. The top end of the second linear grid polarizer 500 abuts against the bottom end of the mounting base 100, and the outer side of the second fixing ring 610 abuts against the inner sidewall of the first annular protrusion 105. The position of the second fixing ring 610 and the second linear grid polarizer 500 can be defined by the friction between the second fixing ring 610 and the inner sidewall of the first annular protrusion 105.
[0037] Reference Figures 2 to 4 In some embodiments of this utility model, the second fixing member 600 further includes a second fixing ring 620; the second fixing ring 620 abuts against the inner sidewall of the first annular protrusion 105 and abuts against the bottom end of the second fixing ring 610.
[0038] After the second fixing ring 610 is pressed against the second linear grid polarizer 500, the second fixing ring 620 can be placed under the second fixing ring 610. The friction between the second fixing ring 620 and the inner wall of the first annular protrusion 105 can limit the position of the second fixing ring 620, thereby fixing the position of the second fixing ring 610 and the second linear grid polarizer 500.
[0039] Reference Figures 2 to 4 In some embodiments of this utility model, a second annular protrusion 106 is provided on the inner edge of the bottom end of the mounting base 100; the second annular protrusion 106 is disposed opposite to the first annular protrusion 105 and abuts against the inner wall of the second wire grid polarizer 500.
[0040] By setting the second annular bump 106, the position of the second linear grid polarizer 500 can be defined with the first annular bump 105, and the second linear grid polarizer 500 can be protected and the light can be blocked from side leakage.
[0041] Reference Figures 2 to 4 In some embodiments of this utility model, the light-emitting element 200 includes a TRI total reflection lens and a light-emitting lamp bead; the TRI total reflection lens is disposed on the light outlet 104, and the light-emitting lamp bead is disposed inside the TRI total reflection lens.
[0042] By setting up a TRI total reflection lens, the utilization rate of light can be improved. Specifically, the exit end of the TRI total reflection lens is set downward and covers the light outlet 104, so that the light emitted by the light-emitting beads inside the TRI total reflection lens can be emitted downward under the reflection of the TRI total reflection lens.
[0043] Reference Figures 2 to 4 In some embodiments of this utility model, the mounting base 100 includes a base body 110 and a cover plate 120; the bottom end of the base body 110 is provided with a receiving groove 111 extending along an annular path; the cover plate 120 is annular, the top end of the cover plate 120 abuts against the bottom end of the base body 110, and covers the opening of the receiving groove 111; a plurality of light outlets 104 are provided on the cover plate 120.
[0044] By designing the base 110 and cover 120 separately, the difficulty of installing the light-emitting element 200 can be reduced. After the light-emitting element 200 is placed in the receiving groove 111 of the base 110, the cover 120 is installed at the bottom of the base 110 to limit the position of the light-emitting element 200.
[0045] The first limiting protrusion and the second limiting protrusion are both located at the bottom end of the cover plate 120, and the second wire grid polarizer 500 abuts against the bottom end of the cover plate 120; the seat body 110 and the cover plate 120 are connected to each other to jointly define the opening 101, and the limiting protrusion 102 is located on the seat body 110.
[0046] Reference Figures 2 to 4 In some embodiments of this utility model, the top of the base 110 is provided with a heat dissipation groove 112, which extends along an annular path, and multiple heat dissipation grooves 112 are provided and spaced apart.
[0047] By setting up heat dissipation slots 112, the heat dissipation efficiency of the base 110 can be improved.
[0048] Reference Figures 2 to 4 In some embodiments of this utility model, a third annular protrusion 107 is provided on the outer edge of the top end of the cover plate 120, and an annular mounting groove is provided on the lower outer side of the seat 110, with the third annular protrusion 107 disposed in the annular mounting groove.
[0049] After the top end of the cover plate 120 abuts against the bottom end of the seat 110, the third annular protrusion 107 is inserted into the annular mounting groove so that the position between the cover plate 120 and the seat 110 can be defined by setting the third annular protrusion 107 and the annular mounting groove, thereby achieving the effect of pre-positioning.
[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. An infrared polarized machine vision light source, characterized in that, include: The mounting base is annular; an opening is defined in the middle of the mounting base, and a limiting boss is provided on the inner wall of the opening. The limiting boss has an upward-facing mounting surface; the mounting base is provided with a receiving cavity and a light-emitting port; multiple light-emitting ports are provided, and all of them are connected to the receiving cavity; multiple light-emitting ports are provided at the bottom end of the mounting base and are arranged in a ring at intervals. Multiple light-emitting elements are provided, and all of them are disposed within the receiving cavity; the multiple light-emitting elements are respectively disposed above the multiple light-emitting ports; The first linear grid polarizer is made of a metallic material; the first linear grid polarizer is disposed at the opening and abuts against the mounting surface; The first fixing member is ring-shaped; the first fixing member is connected to the mounting base and abuts against the outer peripheral side and top edge of the first wire grid polarizer. The second linear grid polarizer is ring-shaped and made of metal; the top end of the second linear grid polarizer abuts against the bottom end of the mounting base and covers the plurality of light outlets; The second fixing member is ring-shaped; the second fixing member is connected to the mounting base and abuts against the outer peripheral side and bottom edge of the second wire grid polarizer.
2. The infrared polarized machine vision light source according to claim 1, characterized in that, The first fixing member includes a first fixing ring; a first limiting groove is provided on the lower inner side of the first fixing ring; the outer side of the first fixing ring abuts against the inner wall of the opening, and the groove wall of the first limiting groove abuts against the outer peripheral side and top edge of the first wire grid polarizer.
3. The infrared polarized machine vision light source according to claim 2, characterized in that, The first fixing member further includes a first fixing ring; the first fixing ring abuts against the inner wall of the opening and abuts against the top of the first fixing ring.
4. The infrared polarized machine vision light source according to claim 1, characterized in that, The mounting base has a first annular protrusion on its outer bottom edge; the second fixing member includes a second fixing ring; the upper inner side of the second fixing ring has a second limiting groove; the outer peripheral side of the second fixing ring abuts against the inner wall of the first annular protrusion, and the groove wall of the second limiting groove abuts against the outer peripheral side and bottom edge of the second wire grid polarizer.
5. The infrared polarized machine vision light source according to claim 4, characterized in that, The second fixing member also includes a second fixing ring; the second fixing ring abuts against the inner sidewall of the first annular protrusion and abuts against the bottom end of the second fixing ring.
6. The infrared polarized machine vision light source according to claim 4, characterized in that, The mounting base has a second annular protrusion on its inner bottom edge; the second annular protrusion is disposed opposite to the first annular protrusion and abuts against the inner sidewall of the second wire grid polarizer.
7. The infrared polarized machine vision light source according to claim 1, characterized in that, The light-emitting element includes a TRI total reflection lens and a light-emitting LED; the TRI total reflection lens covers the light outlet, and the light-emitting LED is disposed inside the TRI total reflection lens.
8. The infrared polarized machine vision light source according to claim 1, characterized in that, The mounting base includes a base body and a cover plate; the bottom end of the base body is provided with a receiving groove extending along an annular path; the cover plate is annular, the top end of the cover plate abuts against the bottom end of the base body, and covers the opening of the receiving groove to define the receiving cavity; a plurality of light outlets are provided on the cover plate.
9. The infrared polarized machine vision light source according to claim 8, characterized in that, The top of the base is provided with a heat dissipation groove, which extends along a circular path, and there are multiple heat dissipation grooves arranged at intervals.
10. The infrared polarized machine vision light source according to claim 8, characterized in that, The top outer edge of the cover plate is provided with a third annular protrusion, and the lower outer part of the seat is provided with an annular mounting groove, and the third annular protrusion is disposed in the annular mounting groove.